cant start the app

Something is wrong with your Arma, there are lots of non-game files in the game folder. D3DCompiler, d3dx9, binkw, X3DAudio, xactengine?
Please delete all files (not folders!) in your game directory, then verify game files in steam to clean it up.
Does it still not work? Then https://community.bistudio.com/wiki/Arma_3:_Unusual_Process_Exit#0xC000007B_-_STATUS_INVALID_IMAGE_FORMAT (It currently links the wrong c++ 2013, it should be c++2022 now)